Should I go to the hospital or just my regular doctor?

Okay, I went out Wednesday and I guess I hurt my ankle but I didn't feel the pain till the next day so I ended up leaving school a period because I couldn't put my foot on the ground and it took me forever to go up the stairs. Friday, no school for me. The pain wasn't as bad and it's still the same today Sunday but I can't put it on the ground with out it hurting. It hurts when I elevate it and there's like this tingling feeling and then there's like a shot of pain and it hurts. I don't think it's my ankle but my Achilles tendon. I'm not sure if I should go to my regular doctor because I might have to get x-rays and they can't do it at their office or the hospital were I'm pretty sure they can just do everything there but should I go to the emergency room because it's not that big of an emergency? I really wanna walk and get back to school so which one will get the job done faster.